Head-Mount Accessory Interface for Modular Function Expansion

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Solution Overview

Problem

Existing head-mountable devices lack flexibility in accommodating diverse user preferences for components and functions, as they often require permanent components that may not meet all user needs at different times.

Innovation Solution

A head-mountable device with customizable and exchangeable accessory devices that connect via adjustable mechanisms, allowing users to modify components and functions as needed, enhancing performance and user experience.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Reliability

If permanent components are used in head-mountable devices, then device stability and reliability are improved, but device adaptability and versatility deteriorate

Engineering Contradiction:
Improvedevice stabilityVSAvoiddevice adaptability
Core Design Contradiction:
ReliabilityVSAdaptability or versatility

Solution Approach 1:

The head-mountable device is divided into a permanent base unit and separate removable accessory devices. The base unit contains core components that remain fixed, while accessory devices with specific functions (lights, cameras, microphones, etc.) can be attached or detached as needed. This segmentation allows the permanent base to maintain reliability while the removable accessories provide adaptability.

Inventive Principle:
Principle #1Segmentation

Solution Approach 2:

The base unit is designed with universal connection interfaces that can accommodate multiple types of accessory devices. A single base unit can work with various accessories depending on user needs, making the overall system multi-functional without requiring permanent integration of all possible components.

Inventive Principle:
Principle #6Universality (Multi-functionality)

2Adaptability or versatility

If multiple components are integrated into the head-mountable device, then device functionality is improved, but device complexity increases

Engineering Contradiction:
Improvedevice functionalityVSAvoiddevice complexity
Core Design Contradiction:
Adaptability or versatilityVSDevice complexity

Solution Approach 1:

Instead of integrating all components into a single complex device, the system segments functionality into a simple base unit and separate accessory devices. Each accessory contains only the specific components it needs, reducing individual device complexity while providing comprehensive functionality when accessories are attached.

Inventive Principle:
Principle #1Segmentation

Solution Approach 2:

Specific functional components (lights, cameras, microphones, etc.) are extracted from the main device and placed in separate accessory devices. This extraction reduces the complexity of the base unit while allowing users to add specific functionalities only when needed.

Inventive Principle:
Principle #2Taking out (Extraction)

3Adaptability or versatility

If customizable accessories are added, then user preference satisfaction is improved, but device configuration time increases

Engineering Contradiction:
Improveuser preference satisfactionVSAvoidconfiguration time
Core Design Contradiction:
Adaptability or versatilityVSLoss of time

Solution Approach 1:

The device configuration is made dynamic and adjustable in real-time. Users can attach or detach accessories based on immediate needs without permanent modifications, allowing quick adaptation to different situations while maintaining simplicity through standardized connection interfaces.

Inventive Principle:
Principle #15Dynamics

Data Source

PatentEP4217786B1Head-mountable device with connectable accessories
Publication Date: 2026.02.11 APPLE INC
  • EP4217786B1 patent drawingFigure 1
  • EP4217786B1 patent drawingFigure 2
  • EP4217786B1 patent drawingFigure 3

AI summary

Head-mountable devices can include connection mechanisms that provide adjustable and exchangeable connections with other devices to enhance performance of the head-mountable device. Such connections can provide both mechanical engagement and operable communication between the connected devices. Accessory devices and/or external devices can be easily connected to provide different components and functions at different times as desired. Accordingly, a main portion of the head-mountable device need not include permanent components that provide every function that will later be desired by the user. Instead, the head-mountable device can have expanded and customizable capabilities by the use of one or more accessory devices.